<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.thymeleaf.org"
      xmlns:sec="http://www.thymeleaf.org/thymeleaf-extras-springsecurity5">
<head><title>Spring Security Example </title></head>
<body>
<div th:if="${param.error}">
    无效的用户名或者密码
</div>
<div th:if="${param.logout}">
    你已经登出
</div>
<form th:action="@{/login}" method="post">
    <div><label> 用户名 : <input type="text" name="username"/> </label></div>
    <div><label> 密码: <input type="password" name="password"/> </label></div>
    <div><input type="submit" value="登录"/></div>
</form>
</body>
</html>

